//
//  WBVisitorView.swift
//  swift微博
//
//  Created by qlwl on 17/2/26.
//  Copyright © 2017年 qlwl. All rights reserved.
//

import UIKit

//访客视图
class WBVisitorView: UIView {
    
    /// - parameter dict: [imageName / message]
    ///如果是首页 imageName == ""
    var visitorInfo: [String : String]?{
        didSet{
            //1> 去字典信息
            guard let imageName = visitorInfo?["imageName"], let message = visitorInfo?["message"] else {
                return
            }
            //2> 设置信息
            tipLabel.text = message
            //2> 设置图像信息
            if imageName == "" {
                return
            }
            iconView.image = UIImage(named: imageName)
        }
    }
    
    //MARK 构造函数
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
    }
    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implementde")
    }

    //MARK: 私有方法
    ///图像视图
    fileprivate lazy var iconView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_smallicon"))
    //遮盖图像
    fileprivate lazy var maskIconView:UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    
    //小房子
    fileprivate lazy var houseIconView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    //提示标签
    fileprivate lazy var tipLabel:UILabel = UILabel.yw_label(withText: "关注一些人，回这里看看有什么惊喜关注一些人，回这里看看有什么惊喜", fontSize: 14, color: UIColor.darkGray)
    //注册按钮
    fileprivate lazy var registerButton:UIButton = UIButton.yw_textButton("注册", fontSize: 16, normalColor: UIColor.orange, highlightedColor: UIColor.black, backgroundImageName: "common_button_white_disable")
    //登录按钮
    fileprivate lazy var loginButton:UIButton = UIButton.yw_textButton("登录", fontSize: 16, normalColor: UIColor.darkGray, highlightedColor: UIColor.black, backgroundImageName: "common_button_white_disable")
}

//MARK: - 设置页面
extension WBVisitorView {
    func setupUI() {
        backgroundColor = UIColor.yw_color(withHex: 0xEDEDED)
        
        //1添加控件
        addSubview(iconView)
        addSubview(maskIconView)
        addSubview(houseIconView)
        addSubview(tipLabel)
        addSubview(registerButton)
        addSubview(loginButton)
        
        //2. 取消 autoresizing
        for v in subviews {
            v.translatesAutoresizingMaskIntoConstraints = false
        }
        
        let margin:CGFloat = 20
        //3. 自动布局
        //1>图像视图
        addConstraint(NSLayoutConstraint(item: iconView,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView,
                                         attribute: .centerY,
                                         relatedBy: .equal,
                                         toItem: self,
                                         attribute: .centerY,
                                         multiplier: 1.0,
                                         constant: -60))
        //2>小房子
        addConstraint(NSLayoutConstraint(item: houseIconView,
                                         attribute: .centerX,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerX,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: houseIconView,
                                         attribute: .centerY,
                                         relatedBy: .equal,
                                         toItem: iconView,
                                         attribute: .centerY,
                                         multiplier: 1.0,
                                         constant: 0))
        //3>提示标签
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .centerX, relatedBy: .equal, toItem: iconView, attribute: .centerX, multiplier: 1.0, constant: 0))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .centerY, relatedBy: .equal, toItem: iconView, attribute: .bottom, multiplier: 1.0, constant: margin))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1.0, constant: 236))
        
        //4>注册按钮
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .left,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .left,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        addConstraint(NSLayoutConstraint(item: registerButton,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: nil,
                                         attribute: .notAnAttribute,
                                         multiplier: 1.0,
                                         constant: 100))
        //5>登录按钮
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .right,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .right,
                                         multiplier: 1.0,
                                         constant: 0))
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .top,
                                         relatedBy: .equal,
                                         toItem: tipLabel,
                                         attribute: .bottom,
                                         multiplier: 1.0,
                                         constant: margin))
        addConstraint(NSLayoutConstraint(item: loginButton,
                                         attribute: .width,
                                         relatedBy: .equal,
                                         toItem: registerButton,
                                         attribute: .width,
                                         multiplier: 1.0,
                                         constant: 0))
        //6>遮罩图像
        //views: 定义 VFL 中的控件名称和实际名称映射关系
        //metrics: 定义VFL 中 （）制定的常数映射关系
        let viewDict = ["maskIconView": maskIconView,
                        "registerButton":registerButton] as [String : Any]
        let metrics = ["spacing": -35]
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat: "H:|-0-[maskIconView]-0-|",
            options: [],
            metrics: nil,
            views: viewDict))
        addConstraints(NSLayoutConstraint.constraints(
            withVisualFormat: "V:|-0-[maskIconView]-(spacing)-[registerButton]",
            options: [],
            metrics: metrics,
            views: viewDict))
        
    }
}
